A Dell USB keyboard can be purchased easily at Amazon for $27 with free shipping or you could buy a used on in very good condition for only $5.99 from Amazon.
there is no way you would have to buy a new keyboard
You can buy on at Best Buy or Walmart and maybe Radio Shack.
the store
Any electronic store, Best Buy,GameStop
You can buy a transmitter USB on many sites online, at a local store or through a friend who is selling them. Here is a recommended site to buy a transmitter USB: http://en.wikipedia.org/wiki/Telephone_recording_laws
The Ikey DW-5K portable keyboard has a very long battery life (Ave. of 6 months). The keyboard is also water resistant, dust resistant, and resistant to corrosive materials. It utilizes a usb plug that plugs into the computer/laptop's usb port. This keyboard also has 30 foot radio frequency range. IBM Travel Keyboard With UltraNav 92-Key TrackPoint French Usb Black 31P9491 is a good small keyboard for traveling.
Korg produces in various colors the Microkey 37-Key USB Midi Keyboard, the microKEY61 USB Midi Keyboard with Legacy, and the microKEY25 USB Midi Controller Keyboard.
you can use any USB keyboard. i don't think they've made one so just take a USB keyboard and plug into the USB port in the back of Wii
Yes, as long as you have the usb ports for the adapters. Also, there are some brands that sell a combo of the keyboard and the mouse together that will use the same adapter if you do not have very many usb ports.
Best Buy and Gamestop are the key carriers.
There are a variety of USB accessories available, and they can be found at electronics stores. The Apple Store, Best Buy, Fry's Electronics, and Amazon all have USB accessories.